Doffer.



H. D. GOLM AN GI: B. A PETERSON.

BUFFER.

.' APPLIOAIIGH FILED JULY 22, 1903.

Patented may 2Q, .1913.

7 sums-sun's 1.

DOFFER. v I

APPLICATION FILED JULY 22, 1908.

- Patented May 20, 1913.

'1 BHEBI'S-BBEBT a.

H'. n. GOLMAN & B. A. PETERSON.

H. D. CQLMAN & B. A. PETERSON:

DOFFER. urummon FILED JULY 22, 908.

Patented MayQQ 1913.

7 SHEETS-SHEET 4.

H. D. GOLMAN & B. A. PETERSON.

DOFFBR.

APPLICATION FILED JULY 22, 1903.

Patanted May 20, 1913.

7 SHBBTS8HEET 6.

7"! IIIIIl/I H. GOLMAN o: B. A. PETERSDN.

HOPPER.

APPLIULTION FILED JULY 22, 1908.

Mama May 20, 1913.

7 SHEETS-SHEET 7.

structetl in Accordance with our invention.

To all whom it may concern:

nieclnmism which new be attached to an altering the spinning t' ante or rearranging A .ll. 1.;

4H. a A,

HOWARD ID. CGLIILAN AN?) BURT A. PETERS-"SN, 0F ROCKFORD; 112151319193; ASSIGNGRB 10 HOW'ABD D. tIOLMYAEE, LUTHER L. MILLER, AND HAREY'A. SEVEHSQH, DGKNG BUSINESS 3%.? EGCKF-OED, KLEIN @318, AS BARBER-GOLKMMX SQHFAIIY;

osses.

Speeification of Letters Yatent.

?2itentetl Hay 28*. 1913.

Application filed July 22. 19ml. Serial No. 444,698.

Be it known that We, Howl igo D. Con-- MAN and BURT A, PETERSON, citizens of the United States, residing at Rockford, in the county of lVinnebago anti State of Illinois, have invented certgiin new and useful lnipmreinents in Dollars, of which the fol lowing is it specification.

This invention relates to the class of clotfers for spinning'fra nes.

One of the objects of the invention is to provide a. mechanical (lofier for retrieving filled bobbins from the spindles on the spinning frame and supplying empty bobbins in place (if-the filled ones which have been pro-- viously removed.

Another objectis to provide it clofing ordinary spinning; trains without iniit'eriiillv any operative parts thereof.

Another object of the invention is to pro ride a mechanical means for placing empty bobbins upon the spindle, so that the empty bobbins will hold the end of the yarn in such a manner that when the frame is started, the yarn will be laid on the empty bobbin without the necessity ot'the yarn being previously attached, by manual means, to the bobbin.

Other objects and advantages of this invention will become apparent by reference to the following description, read in connection with the accompanying drawings, in which:

Figure 1 is a front view of it tlotler conpart of ii spinning frame being shown to illustrate the application of the device. Fig. 2 is 9. plan View of the (lotier and a partof a ring rail of the spinning frame. Fig. 3 is it sectional-view through the tlotl'er anti a portion of a. spinning frame, a roving bobbin,t-he drawing rolhthe tlireatl-bourtl with its thread guides, the ring rail, rings anti travelers,-and the spindle rail with its spindles being shown oi conventional design. as they specifically form no part of this invention butare illustrated for the purpose ofshowing the application ofour ilotier. Fig. 4 is it sectional View on the line- 4 of Fig. 1', showing; the carriage of the tloi'ier locked to it spindle base. 5 is itsitnilztr View ilepcntlingz showing the cai'rizigemotuating tlog in engiigement with the spindle base 31Killll0$king dog disengaged from the spindle base.

Fig. 6 is a detail perspective VltlW oi the slide for carrying the tlotiing tube, the bob: bin seating plunger and the feed. actuating arm. Fig. 7 is enlarged sectional View through the bobbin teething tube, showing the esez penient device in position to prevent feeding of a bobbin, and the esciipeinentactuating arm in position just prior to settizttiug the escztpement to permit the release of an empty bobbin. Fig. 8 is a sectional View through thebiisemf the (toiling tube. Fig. 9

is it sectional view on the line 9 9 of'l ig. 8." Fig. it) is a 'tleteil View of it spindle, ring rail, rinq :ind trareler, it full bobbin having been remorecl. Fig. ll is it somewhat similar YEW.) the full bobbin being moved to one side of the spindle preparatory to supplying the spindle with iinenipty bobbin; and Fig. 12 is it view showing the empty bobbin sentcd on the spindle and a. full bobbin in {Josie tion to have its thread connection withthe' spindle broken.

Referring now to the (la-swings by numerals of reference, 15 designates the base of a ring frame. 16 is the thread guitle boot-cl, l7 the thread guide, 18 the drawing rolls, 19 the bobbins containing the roving and 20 the roving to be fed to the drawing rolls. On the base 1.5 is a spindle rail 2i. Adjw cent to the'spinclle rail is ti ring rail 22 earryingz' the rings 23 with tin-earl travelers 2 in the usual manner common. to o. ring frame. The spindle rails are shown as provided with the usual spindle 25 and the whirls 26. through which the spintiles 27 are driven by suitable (lriving meantnism.

To the face of the spinille rail 21 is securetl horizontal t'lu'ii'er-supporting rail 28 provided with it groove 2%) to receive therollers 30 on the (letter earrings 31. This (loti'er carriage 31 consists of a substantially rectangular frame and is provided With a bracket 32 having; it zontul 'roller 5.3 which bears against; the lower flange ot the bolster rail ill. The rec- 't zinmiliir frame 3. of the currizme is norif) horitheir lower ends by the foot piece 38, through the medium of which said guide is i f fastened to the frame, as, for example, by

the fastening devices 39. The standard 34 is provided with bearings 40 and 41 to receive a crank shaft 42 having an operating crank 43 keyed or otherwise secured thereto. The opposite end of the crank shaft 42 is provided with a crank 44 movable in the horizontal groove 45 of the guide bar 46 (Fig. 6) carried by the slide-plate 47, which is movable in the grooves of the bars and 36. This plate 41 carries a guide or conduit for full bobbins, which guide is herein shown as consisting of a tube 48 secured to the plate 47 by the bracket 49 (best seen in- Fig. 9). The bracket 49 is provided with tapped openings 50 and 51 and dowel receiving recesses 52 and The openings 50 and 51 receive screws 54 and 55 which pass through the plate 47 and into the openings 50 and 51. The openings 52 and 58 receive the dowels 56 and 57, which pass through the plate 47 and engage said bracket. A somewhat similar bracket 58 is she n as being carried by the upper portion of the plate '47 and holds the dotler tube 48 fast to said plate. The bracket 49 is provided with a plurality of (log-receiving recesses 59, in which are pivoted the dogs 60 which pass through the slots 61 I in the dofi'er tube 48 so as to be in position ,to engage a filled bobbin and remove it from its spindle (see Fig. 3).

The rear edge of the bracket 49 is rounded. so as to reduce the liability of the thread becoming broken when the doiler tube passes over a filled bobbin preparatory to removing it. Inthe downward movement of the dofling tube, the rounded bracket 49 contacts the thread extending from the drawing rolls to the traveler, and by pushing. against said thread the bracket 49 causes the traveler to move to the rear of the bobbin if it is not already in that position, thus preventing the thread from being caught by the dofiing element and broken.

Rigid with one of the guide bars of the the plate 47 is a donning tube or supply tube 62. This supply tube is shown tube 62.

in Fig. 1 as being fastened to the bar 36 by straps or bands 63 and 64: Near the discharge end of the supply tube 62 (see Fig. 7) is an escapement comprising a double toothed dog 64 having an arrester tooth 65 at its upper end, and an escapement tooth 66 at its lower end. This dog 64 is pivoted between its ends, as at 67, to the-lugs 68 on the band 69 carried by said A spring 70 has a normal tendency to maintain the tooth 65 within the tube 62 and in arresting position. The tension of the spring may be overcome by the ofisetted portion 71 of the escapement arm 72. The arm 72 is carried by a bracket 73 on the plate 47 therefore it will be apparent that as the tube 62 is held against vertical inovement, and the arm 72 moves with the plate, the oiisetted portion will contact with the heel 74 of the dog 64 on the upstroke of the arm 72 so as to swing the teeth 65 out of arresting position and permit the base of one of the bobbins 75 to drop below the tooth 65 and on to the tooth 66; where it will be held until the slide 47 begins its downward movement, carrying with. it the arm 72 and moving the ofi'se ted portion 71 out of contact with theheel 74. When this occurs, the spring 70 will restrre the tooth 65 to arresting position, allowirg the tooth 66 to swing out of the tube and permitting the escape or release of the base of the bobbin 75 which has been held there by, so that the empty bobbin may be deposited upon a spindle, as will be explained hereinafter.

, On-the end of the bracket 73 is a springpressed plunger 76 comprising a shank 77 slidable in the end .of said bracket 73. On the lower end. of said shank 77 is a head 78 normally pressed down by the expansion spring 79 which is interposed between it and the bracket 73. When the operator turns the crank 43 to raise the plate 47, movement is imparted to said plate through the crank shaft42 and the crank 44; the dott'er tube 48 moves with it so that its bottom end is above the uppermost ends of the bobbins on the spinning frame. During this upward movement, the eseapement dog 64 is act-uated, as has just been described, to permit the bobbin 75 to fall on the tooth 66. Continued movement of the crank shaft 42 will be etlective in returning the plate 47 on its downward movement so that the dofter tube 48 will pass over filled bobbin, the movement of which will'swing the dogs 60 on their pivots 6O and cause. their free ends to move through the slots 61, until they have passed over the greater diameter of the bob bin, when they will move back into position to engage the restricted lower port-ion of the bobbin, as shown in Fig. 3. Upon the next upward movement of the plate 47 the bob-- bin will be carried from the spindle, on account of the engagement therewith by the dogs 60, and will be held in said tube 48 by the dogs until the tube is again returned on .the top of the next adjacent bobbin.

'l/Vhen the tube 48 again passes down over a full bobbin the one just previously removed will be forced up into the tube on account of having its base come in Contact with the upper end of the bobbin to be removed; aud as the tube passes down over the new bobbin, the dogs will be effective in grasping it to lift it from its spindle upon the next upward movement of the plate. It will be seenthat the bobbin-engaging means oca e-so "previously been removed.

l then the plate 47 moves down, it carries with it the bracket 73 and causes the plunger head 78 to contact with an empty bobbin previously released by the tube (32 and presses down upon the upper end of said bobbin to cause it to be seated.

The axes of the tubes 48 and (32 are spaced apart a distance equal to the distance be tween two spindles, so that while a full bob-- bin is being removed, an empty bobbin may be supplied to an adjacent spindle.

Mechanism is provided for moving the carriage along the spinning frame the re quired distance to cause the tubes 993 and 62 to aline with the spindles.

Carried by the frame 31 a bracket. 80 having; a depending portion terminating in a horizontal extension 81. This bracket 80 held in position by a brace 82 having one end fastened to the bracket 80 and the other end secured to the frame 31. Pivoted to the free end of the bracket 80 is a bell crank I 83.. Said bell crank is provided with a short arm 84- and a long arm 85. T he long arm carries at its extremity a propelling dog 86 which is in the form of a bell crank, one arm 87 of which is provided with aroller 88 at its free end to be engaged by the periphery of a cam 89 on the cam shaft 90. The other free end of the propelling dog is provided with a notched or recessed portion 91 adapted to successively engage the base 25 of the spindles 2? The short arm 84 of the bell crank 83 is provided with. a roller 92 movable in a groove 93 on the cam 94-. (See Figs. 4; and 5). The cam 89 is so shaped to give an inward and outward movement to the dog 86. The extremity of one movement is shown. in Fig. 4- and the extremity of the other movement is shown In Fig. 5.

The spring 949, connected to the dog 86 and to the long arm of the bell crank 83, is

for the purpose of holding the roller 88 in contact with the periphery of its actuating cam 89; but the inward movement of the dog 86 is limited by a stop 95 on the frame 31. T he roller 92 on the arm 8d of the bell crank 8-3 is held in contact with the inner wall of the cam groove 93 by a spring 96 'iastened to the long arm of said hell crank and to the frame 31; but this spring 96 may be dispensed with, it desired. it lug 97 is carried by the frame 31., and pivoted to said lug 97 is a locking dog 98 to which is connected the spring 99, one end. of which engages liltdog 93, and the other end of which is connected to the bracket 80 at 100. The dog tube 62.

98 is provided with a spindle-base-engagin jaw 101, but said-jaw 101 is normally hel away from the spindle-base by the spring 99. This spring is also effective in holdingthe roller 102 in contact with the locking cam 103 on the cam shaft 90. The'cam shaft 90 is driven by the bevel gears 104 and 105 (see Fig 3), the former of which is on the shaft 90 and the latter on the crank shaft 42' From the foregoing it will be apparent that the entire mechanism is driven from the crank shaft 42 and that the parts are so timed as to move in proper step to ac complish the desired results. For example: In order that the dofier tube and supply tube may move in regular sequence over the proper spindles, it is necessary that the movements of the dogs S6 and 98 be timed with relation to the movement of the dofier tube t8 and .the escapement in the supply As the shaft a2 is turned, motion is imparted to the cam shaft 90 actuating the'cams 89, 94 and 103. It will beassuined that the locking dog 98 is in engage-- ment with the base of a spindle. Upon the operation of the crank shaft d2, the cam 89 will move the jaw 91 of the dog 86 into en- 'agementwith the next adjacent spindlespindle-base by the spring 99 (see Fig. 5).

When. the jaw 91 of the dog 86 engages its spindle-base, the cam 89 has temporarily finished its work; that is, its periphery will move along against the roller 88 without imparting any movement to the dog 86. During this time, however, the cam 94 is acting upon the roller 92 to swing the end of the arm 84c" toward the cranlt shaft 90. This will have a tendency to swing the end of the long arm So'toward' the lug 97. In view of the fact that the arm 85 cannot actually-swing with relation to the jaw 91 ot the dog 86, the whole carriage must he pulled along a distance equal to the movement. imparted to the arm 84 of the bell crank 83, and this distance will be equal to the. distance between the axes of two adjacent spindles. When the carriage has u'|ove(l.tlu1t distance, the cam 94- will cease to move the arm 84 toward the axis of the cam shaft 90 and the cam 89 will be ready to permit the release c t-the spindle-base by the jaw 91 ot' the dog tlfi. However, just previous to this release, the jaw 10]. 0f the dog 98 will have l'iecn moved into locking engagement with the spindle-liaise just previously engaged by the jaw 91, and 'the' periphery of the cam 103 is such that the dog- 98 will be held in locking engagement with the spindlebase during the time tlihtf the. client portion 71 of the arm '72 out of engagement with the heel74of the, dog 64. to drop an empty bobbin" on an At about the same time, the cam 103 empty spindle, and during the operation of dofling the full, bobbin. v

The downward movement of the plate 4:? is eflective in causing the dofier tu e is move downward over a full bobbin and engage it near the base, ready to carry it oil". its spindle. The continued rotation of the shaft 42 will rmit its removal and this is accomplished while the carriage is locked to the spinning frame, or as shown herein, to one of the spindle-bases. As the dofl'er tube is carried a slight distance above the uppermost point of the spindle, and. after it hascompleted its dofling movement, the locking dog 98 is released from engagement with its spindle-bass and the propolling dog 86 is engaged with a spindle base so as to pull the carriage along another stated distance, pulling it along a distance equal to the distance between the two spindles.

The operation just described is repeated until all of the filled bobbins on the frame have been dofi'ed and empty bobbins supplied to the spindles so that the spinnii'ig frame may be started again. i V

The removal" fa firlilbobbin and the 'substitution of an empty bobbin will be effected n such a manner that when the spinning frame is started, the threads will be positioned to be properlylaid on the bobbin in the usual manner. The manner in which this is accomplished is best shown in Figs. 1 0. 1t and 19., from which it will be apparent that it will not be necessary to manually attach the thread to the empty bobbins before starting up the spinning frame.

In order to use the dotting mechanism herein described in connection with an ordinary spinning frame, it will be only necessary to fasten the supporting bar 28 to the spindlerail, as seen in Fig. 3, and. hang the dotling machine thereto by the rollers 30, permitting the roller to bear against the vertical face of the lower portion of the spindle rail. Before the dotting operation begins, the thread board 16 should be swung up out of the way, as shown in Fi t 3. After the doiling'has been effected, the machaine'may be readily removed and hung on another spinning frame which is ready to be dofled.

The dofiing tube it; may terminate in a flexibletube in connnunieation with a box or suitable receptacle carried along by any appropriate means with the carriage 31, so that the dotted bobbins may be deposited therein.

It-will be seen that the bobbin-engaging means 60 moves downward over a toll bobbin, then upward to lift the bobbin from its spindle, and then torwanl into vertical alineuient with the next fall bobbin. No special movement of the bobbine ngaging means for the purpose of oiseharging the dolled bobbin is necessa y l discharge-conduit- 8 for iiull bobbins asso- Ciated with the bobbin-engaging means, and because in the downward mmement of the engaging means the dolled bobbin is carried into contact with the nextbobbin to be defied, and thereby pushed out of or along said guide or conduit.

The tube 62 may be supplied by any suitable means so that it will have enough empty bobbins therein to supply the empty spindles as the carriage passes along the pinning frame.

llc claim our im'ention:

1. in a dotier for spininng frames, framework, recipromtory means for gaging a full bobbin, and a guide movable with said engaging means and with station to said i 'amowork. for conducting dolled bobbins away from said engaging means.

2. In a doii'er for spinning frames, reciproeatory means adapted'to embrace and engage a full bobbin, and a conduitalined with said engaging means for conducting the engaged bobbins away from said engaging means.

23. in a doller tor spinning frames, reciprocatory means adapted to embrace and engage a full bobbin, and a conduitalined with said engaging means and reciprocable therewith for conducting the engaged bobbins away from said engaging means.

:1. in a dotier for spinning trajmes, a carriage; bobbin-engaging means mounted on the carriage and reeiprocable vertically with relation to the carriage in the "critical plane of the bobbin spindles, said engaging means being automatically yieldable to permit the engaging means to pass downward over a bobbin, and a guide movable with said engaging means to receive bobbins engaged by said engaging means and conduct them; away from said engaging means:

5. In a dofler for spinning frames, bobbin-engaging means, means for vertically reciprocating said engaging P1621115 in the vertical plane of the bobbin spindles, said engaging means being automaticallyyieldable to permitthe engaging means to pass downward over a bobbin, a bobbin conduit alined with and .nnwable with. said engaging means to receive bobbins engaged by said engaging means and conduct them awai, from said engaging means, and means for giving said engaging means and conduit an intermittent advancing movement to bring them into vertical alinement with successlve spindles on the spinning frame. I I

6. Tn a dofi'er for spinning frames, a slide supported for vertical reciprocation, bobbinengaging means on said slide, a bobbin-conduit alined with said engaging means and mounted on said slide, and means for vertically reciprocating said slide comprising a :anse a guide or o horizontal shaft, a crank on said shaft, and a horizontal, guide bar secured to said slide and slidably engaged by said crank.

7. In a dofter for spinning frames, a structure arranged to be supported for movementalong a spinning frame, a slide mounted in said support for vertical reciprocation, bobbin-engaging means mounted on said slide, a donning tube stationarily fixed to said structure at one side of the path of movement of the slide, and a bobbin-seating plunger arranged to be moved by said slide said bobbin-engaging means, donning tube and bobbin-seating plunger being spaced apart at distances equal to the distance between two adjacent spindles.

8. In a dofiier for spinning frames, a dotling means, a donning means, and a bobbin-seater, said devices being arranged side by side with the donning means between the other two, and spaced apart at distances equal to the distance between two adjacent spindles on the spinning frame, means for actuating said devices, means for supporting said devices for movement along a spinningframe and means for giving said devices an intermittent advancing movement to bring them into vertical alinement with successive spindles on the spinning frame, each advancing movement of said devices being equal to the distance between two adjacent spindles.

9. A doffer comprising operating mechanism, and means adapted to engage the spindle-bases of a spinning frame for propelling said mechanism along the front of the spinning frame.

10. A doffer mechanism for spinningframes, comprising a movable carriage means on the carriage for removing full bobbins from the spindles, means upon the carriage for supplying empty bobbins to the empty spindles spindle-base engaging means for propelling the carriage along the spinning frame, and spii'idle-base engaging means for locking the carriage against movement.

11. The combination with a spinning frame, of a dolfer carriage, a bell-crank lever mounted on said carriage, a propelling dog pivoted to one arm of said bell-crank lever, means acting on the other arm of said bellcrank lever to swing said lever, and means acting on said dog to move the same into and out of engagement with a part on the spinning frame.

12. The combination, with a spinning frame, of a dotfer carriage; a bell-crank lever mounted on said carriage; a propelling dog pivoted to one arm of said bellcrank lever; a cam engaging the other arm of said bell-crank lever to swing said lever; a cam acting on said dog to move the same into engagement with a part on the spinning frame; and a spring for moving said dog out of engagement with said part.

13. The combination, with a spinning frame, of a doffer carriage; a bell-crank clever mounted on said carriage; a propelling dog pivoted to one arm of said bellcrank lever; a cam acting on the other arm of said bell-cranlrlever to swing said lever; a cam acting on said dog to move the same into engagement with a part on the spinning frame; a spring for moving said dog out of engagement with the-part on the spinning frame; a locking dog pivoted on said carriage; a cam for moving said locking dog into engagement with a part on the spinning frame; a spring for moving said locking dog out of engagement with said part; and an actuating shaft on which all of said cams are fixed 14. A spinning frame having a bolster rail comprising an upper flange and a lower flange, in combination with an angular rail attached to the upper flange, and a doifer having a roller running upon said angular rail for carrying the weight of the doffer and preventing tilting displacement of the dotfer in one direction, said doifer also having a roller bearing against the lower flange of the bolster rail for preventing tilting displacement of the dotfer in one direction.

'HOVARD D; COLMAN.

BURT A. PETERSON.

Witnesses LUTHER L. MILLER, LOUISE A. CULVER. 

